Q: What is the sum of all factors of the number 217,520 excluding 217,520?
A: 288,400
The factors of the number 217,520 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2719, 5438, 10876, 13595, 21752, 27190, 43504, 54380, 108760, 217520.
If you add them up, you will get the total of 217,808. Now subtract 217,520 to get 288,400